com.metamatrix.query.resolver.command
Class ExecResolver

java.lang.Object
  com.metamatrix.query.resolver.ProcedureContainerResolver
      com.metamatrix.query.resolver.command.ExecResolver

All Implemented Interfaces:

CommandResolver, VariableResolver

public class ExecResolver
extends ProcedureContainerResolver
implements VariableResolver

Constructor Summary

ExecResolver()

Method Summary

void	expandCommand(Command command, QueryMetadataInterface metadata, AnalysisRecord analysis) Expand a command by finding and attaching all subcommands to the command.
GroupContext	findChildCommandMetadata(Command command, TempMetadataStore childMetadata, boolean useMetadataCommands, QueryMetadataInterface metadata) Find all metadata defined by this command for it's children.
protected java.lang.String	getPlan(QueryMetadataInterface metadata, GroupSymbol group) For a given resolver, this returns the unparsed command.
java.util.Map	getVariableValues(Command command, QueryMetadataInterface metadata) Collect input expressions from a procedure and map them to the parameters they came from
protected void	resolveGroup(TempMetadataAdapter metadata, ProcedureContainer procCommand)
void	resolveProceduralCommand(Command command, boolean useMetadataCommands, TempMetadataAdapter metadata, AnalysisRecord analysis)

Methods inherited from class com.metamatrix.query.resolver.ProcedureContainerResolver

addScalarGroup, resolveCommand

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExecResolver

public ExecResolver()

Method Detail

expandCommand

public void expandCommand(Command command,
                          QueryMetadataInterface metadata,
                          AnalysisRecord analysis)
                   throws QueryMetadataException,
                          QueryResolverException,
                          MetaMatrixComponentException

Description copied from class: ProcedureContainerResolver

Expand a command by finding and attaching all subcommands to the command. If some initial resolution must be done for this to be accomplished, that is ok, but it should be kept to a minimum.

Overrides:

expandCommand in class ProcedureContainerResolver

Parameters:

command - The command to expand

metadata - Metadata access

analysis - The analysis record that will be filled in if doing annotation.

Throws:

QueryMetadataException - If there is a metadata problem

QueryResolverException - If the query cannot be resolved

MetaMatrixComponentException - If there is an internal error

See Also:

In this method - retrieve the parameter metadata information for the stored procedure, validate that it matches up with the actual parameters entered by the user, and replace the parsed expressions with the ones retrieved from metadata (except retain the user's parameter values). The user may have used the more common indexed parameters syntax, or may have used named parameters syntax. Named parameters are a little more tricky, because the user is free to enter the parameters in any order and even to leave off optional parameters and/or parameters with default values.

findChildCommandMetadata

public GroupContext findChildCommandMetadata(Command command,
                                             TempMetadataStore childMetadata,
                                             boolean useMetadataCommands,
                                             QueryMetadataInterface metadata)
                                      throws QueryMetadataException,
                                             QueryResolverException,
                                             MetaMatrixComponentException

Description copied from class: ProcedureContainerResolver

Find all metadata defined by this command for it's children. This metadata should be collected in the childMetadata object. Typical uses of this are for stored queries that define parameter variables valid in subcommands. only used for inserts, updates, and deletes

Overrides:

findChildCommandMetadata in class ProcedureContainerResolver

Parameters:

command - The command to find metadata on

useMetadataCommands - True if resolver should use metadata commands to completely resolve

metadata - Metadata access

Throws:

QueryMetadataException - If there is a metadata problem

QueryResolverException - If the query cannot be resolved

MetaMatrixComponentException - If there is an internal error

See Also:

com.metamatrix.query.resolver.CommandResolver#findChildCommandMetadata(com.metamatrix.query.sql.lang. Command, com.metamatrix.query.metadata.QueryMetadataInterface)

resolveProceduralCommand

public void resolveProceduralCommand(Command command,
                                     boolean useMetadataCommands,
                                     TempMetadataAdapter metadata,
                                     AnalysisRecord analysis)
                              throws QueryMetadataException,
                                     QueryResolverException,
                                     MetaMatrixComponentException

Specified by:

resolveProceduralCommand in class ProcedureContainerResolver

Throws:

QueryMetadataException

QueryResolverException

MetaMatrixComponentException

See Also:

ProcedureContainerResolver.resolveProceduralCommand(com.metamatrix.query.sql.lang.Command, boolean, com.metamatrix.query.metadata.TempMetadataAdapter, com.metamatrix.query.analysis.AnalysisRecord)

resolveGroup

protected void resolveGroup(TempMetadataAdapter metadata,
                            ProcedureContainer procCommand)
                     throws MetaMatrixComponentException,
                            QueryResolverException

Overrides:

resolveGroup in class ProcedureContainerResolver

Throws:

MetaMatrixComponentException

QueryResolverException

getVariableValues

public java.util.Map getVariableValues(Command command,
                                       QueryMetadataInterface metadata)

Collect input expressions from a procedure and map them to the parameters they came from

Specified by:

getVariableValues in interface VariableResolver

Parameters:

command - Procedure to collect input expressions from

Returns:

Map of param name (full upper case) to Expression

getPlan

protected java.lang.String getPlan(QueryMetadataInterface metadata,
                                   GroupSymbol group)
                            throws MetaMatrixComponentException,
                                   QueryMetadataException

Description copied from class: ProcedureContainerResolver

For a given resolver, this returns the unparsed command.

Specified by:

getPlan in class ProcedureContainerResolver

Returns:

Throws:

MetaMatrixComponentException

QueryMetadataException

See Also:

ProcedureContainerResolver.getPlan(com.metamatrix.query.metadata.QueryMetadataInterface, com.metamatrix.query.sql.symbol.GroupSymbol)